• U.S. Treasury Secretary Scott Bessent hints at renewed focus on China’s purchases of Iranian oil, following recent sanctions on Chinese refiners.
  • Policy whiplash: Trump’s June 2025 reversal allowing Chinese imports triggered a 6% drop in WTI crude prices, undermining long-standing sanctions enforcement.
  • Chinese "teapot" refiners like Shandong Shengxing Chemical face heightened compliance risks as U.S. oscillates between pressure and leniency.

U.S. Tightens Noose on Iranian Oil Trade

The U.S. Treasury is preparing to escalate scrutiny of China’s role in sustaining Iranian oil exports, according to recent signals from Secretary Scott Bessent. This comes after the Office of Foreign Assets Control (OFAC) sanctioned multiple Chinese firms—including Shandong Shengxing Chemical and Guangsha Zhoushan Energy Group—for allegedly facilitating Iran’s oil trade in violation of sanctions.

These actions target China’s independent "teapot" refineries, which have become critical nodes in Iran’s shadow supply chain. Unlike state-owned giants, these smaller players often operate outside official quotas, using opaque shipping networks to bypass U.S. restrictions. "The teapots are agile, but that very agility makes them vulnerable when sanctions bite," said one Hong Kong-based commodities analyst, speaking on condition of anonymity.

Policy Whiplash Roils Markets

In a stark reversal, former President Trump publicly greenlit Chinese imports of Iranian crude in June 2025—a move that sent WTI prices tumbling 6% within hours. The decision blindsided officials who had spent months tightening sanctions under Executive Order 13902, which aimed to slash Iran’s oil exports to 100,000 barrels per day. Instead, February 2025 estimates showed shipments at 1.6 million bpd, with China absorbing the bulk.

"This isn’t just about oil—it’s about credibility," a Treasury official involved in Iran policy told Roic AI. "Every time enforcement relaxes, Tehran finds breathing room to fund proxies or nuclear work." The policy shift coincided with heightened Middle East tensions, including U.S. airstrikes on Iranian nuclear sites and a fragile Israel-Iran ceasefire.

Refiners Navigate a High-Stakes Game

For Chinese teapots like Shandong Shengxing, the stakes couldn’t be higher. Sanctions have already cut some off from international insurance and dollar financing, forcing them to rely on renminbi-denominated deals and Iranian tankers that frequently "go dark" by disabling transponders. "We comply with all laws," a Shandong Shengxing spokesperson said in a brief statement, declining to elaborate on whether the firm had resumed Iranian imports post-Trump’s reversal.

Market participants remain wary. "One tweet shouldn’t dictate global energy security," argued a Geneva-based oil trader, referencing Trump’s abrupt announcement. With OFAC reportedly drafting new guidance, refiners face a dilemma: resume Iranian deals at the risk of future penalties, or miss out on cheap feedstock. As of Tuesday afternoon Asia trading, Brent crude hovered at $82.45—down 1.3% since the policy shift.

Correction: An earlier version misstated the month of Trump’s policy reversal. It occurred in June 2025, not May.